The book will focus solely on ActiveRecord, both inside and outside of Rails,
and seeks to be a complete reference for ActiveRecord.

Well, with that out of the way, I’m currently working on the Common Questions
and Howtos chapter, which is the chapter that contains all of the juicy tidbits
and edge cases that don’t fit well into their own chapters, and if anyone out
there has any ideas of things they’d like to see covered there, I’d be really
interested to hear them. I’ve currently got some info on using multiple
databases, how to handle localization, using composite primary keys, using GUID/UUID keys, and some other things
along those lines - I’d love to hear if there is anything you think might be of
value for both new users, experts and everyone in between.